Casement window adjuster



1936- E. E. WEIQDNER 2,049,726

CASEMENT WINDOW ADJUSTER Filed Feb. 21, 1954 1111/, VIII/III I N y E N T lil l k ERNEETEWEIDNER Patented Aug. 4, 1936 PATENT 0mm CASEMENT wnmow ADJUSTER Ernest E. Weidner, New Haven,-Conn., assignor to The H. B. Ives 00., New Haven, Conn, a corporation of Connecticut .Application'February 21, 1934, Serial No. 7 12,364

2 Claims. ((31. 292275) This invention-relates to improvements in casement window adjusters adapted for use inconnection with-casement windows, transoms and all casement structures. I

The objects of the invention are to provide a compact device requiring little space in installation; to'provide an adjuster device having telescopically associated'arms provided with a stop means to limit the relative extendedpositions of said arms; to provide said arms, intermediate of their length, with frictional inter-holding means of ,great efficiency in which there is no metal to metal contact; to provide said frictional interholding means with a spring tension adapted to alsomaintain the enclosed armsubstantially friction free from .the enclosingfarm; and to provide, as between said arms and said frictional interholding means, a limited slipping engagement, longitudinally of said adjuster, to alleviate rigidity. H With these and otherobjects in view as hereinafter may become apparent from the within disclosures, the invention consists not only of the particular form herein pointed out and illustrated in ,the drawing, but readily admits of certain modification within the scope of what hereinafter may be claimed.

i The character of the invention may be best un- :derstood by'reference' to one illustrative device ,illustratedby the accompanying drawing in which the Figure 1 is atop view of the .device installed within a mortise ofasc'asement window sash, the window frame being partly illustrated in crosssection; the Figure 2 is an enlarged fragmentary top View of the device, illustrating the enclosing arm partly in section to expose the frictional interholding means; the Figure 3 is a fragmentary bottom perspective view of the device, illustrating a stop means; the Figure 4 is a cross-section of the device on the dotted line 44 of the next previous figure; the Figure 5 is an enlarged crosssection of the device on a line extending through the frictional holding means; and the Figure 6 is another enlarged cross-section illustrating a modification of the stop means.

Referring more particularly to the drawing, the device as illustrated comprises the two telescopically associated enclosing and enclosed arms I and 2, respectively, the free ends of both arms being provided with the pivotal attaching means 3 and 4, respectively. The enclosing arm I is provided with the channel 5 extending substantially therethrough, and the enclosed arm 2, capable of being freely inserted within the enclosing arm l,

is preferably solid, but not necessarily so, and is provided adjacent its inner end with oppositely located recesses 6 and l, the length and depth of each recess being limited by theabrupt shoulders 8 and the base -9, respectively. The enclosed arm 2 is provided with the companion sets of a frictional element carried within the recesses '6 and I.

Said companion sets are thus placed upon opposite sides of the enclosed arm 2 and each set is comprised of a frictional shoesection Mi, preferably of fibrous material and of less length than the distance between the shoulders 8 of either recess 6 or I, and of a bow spring H positioned between said base 9 and the said section Ell, both ends of the said spring ll engaging a shoulder 8 and resting upon a base '9, while the intermediate convexed portion of the spring it engages the fibrous section i ll. The tensions of the oppositely placed springs ll of the companion sets are thus exerted in opposite directions, outwardly, to urge and maintain the respective sections to projected beyond the normal outer side surfaces E2 of the enclosed arm 2. The under surface l3of the'enclosed arm 2 is provided with the longitudinally extending groove l4 having the side walls l5. 1 At a convenient and predetermined place within the groove M isprovided an obstruction ll formed by throwing up the metal of either or both sidewalls [5 into said groove M or in any other desired manner. Also at a convenient and predetermined place within the channel 5-of the enclosing arm 8 there is likewise provided the obstruction t3. 1 The fibrous shoe sections H3 and the springs l I being placed within their respective recesses 6 and I, as aforesaid, the arms l and 2 are telescoptelescopically associating the arms I and 2 it is better, for obvious reasons, that the obstruction l8 be formed after the insertion of the inner end of the arm 2 within the channel 5 of the arm I.

In installing the device with relation to a casement window, a mortise l9, preferably in the top portion of a window sash 26, may be provided in which to completely contain and, with the cooperation of the meeting part of the frame 2i, to

conceal the device, the pivotal attaching means 3 of the arm I being further mortised within the mortise l9, as at 23, and the pivotal attaching means 4 being mortised, as at 22, within an overhead portion (not illustrated) of the window frame 2|, so that, in a closed position of the sash 20 within the frame 2|, the arms I and 2 of the device are substantially fully telescoped.

In operating the sash 20 swung upon its hinges, one of which is illustrated at 24, the telescoped arms I and 2 are relatively moved longitudinally to extend the reach of the adjuster device as the distance between the attaching means 3 and 4, as pivotally secured to the window sash 20 and the frame 2|, is thereby increased until upon reaching a substantially ninety degree open position of the sash 20, relative to the frame 2|, the obstruction l8 provided by the arm I is blockingly engaged by the obstruction ll provided by the arm 2, such engagement serving as a stop in limiting the extended relative movements of the arms I and 2. Between a fully closed position and said ninetydegree open position, the frictional engagement between the spring-pressed fibrous sections l0 and the interior side surfaces 5 of the metal channel 5 of the arm I is of such a degree of efficiency that the manually swung window sash 20 is thereby held in any open'position against a considerable wind pressure. Upon a directional reversed movement of the swinging sash 20 provided with the improved adjuster device the frictional ele ment has a multiple action in that each spring H is in frictional engagement with a fibrous section 10 while each section III is in frictional engagement with the interior side surfaces It of the enclosing arm I, therefore the fibrous sections ID are not necessarily immediately carried by the recessesfi and I of the enclosed arm 2 within the channel 5, but, similar to the action of the well-known multiple disk clutch, the springs II have a tendency to slip in the engagement of their convexed portions with the fibrous sections l0 until such sections H] are positively engaged by the shoulders 8 at one end or the other of the recesses B and l. The obvious purpose of such multiple frictional engagement is to alleviate rigidity in the starting operation of the device; for, while in the starting operation the fibrous sections Ill may be moved to some extent, they are not fully carried by the enclosed arm 2 until the shoulders 8 at one end of the recesses 6 and I are brought in direct engagement therewith. Before the sections are in direct carrying contact with the shoulders, the convexed portions of the springs II have a limited frictional traveling engagement with the sections ID. The great advantage of this improved starting operation as applied to window adjusters is not only the ease with which a window sash may be manually swung to or from any open position, but the improvement provides a very desirable yielding quality which tends to lessen the strain upon the hinges 24.

The Figure 6 illustrates a modification which transposes the preferred arrangement of the stop means for limiting the extended relative longitudinal positions of the arms IA and 2A, the channeled enclosing arm IA being provided with a groove MA having the side walls I5A opposite portions of which are provided with the obstruction HA and the solid arm 2A beingrprovided with 20 the obstruction ISA adapted ,to travel within the groove MA, the obstructions HA and I8A being intended for relative blocking engagement in substantially the same manner as in the preferred structure. T I

I claim:--- 7 1. A casement adjuster comprising telescopically associated rigid enclosing and enclosed arms, the free end of each arm having a pivotal attaching means,,a frictional shoe device within the enclosing arm and carried by the enclosed arm to frictionally engage the enclosing arm, and a stopping means with which the adjuster is internally provided to limit the relative extending movement of the arms, said stopping means com prising a longitudinally extending channel with which one of the arms is provided, a projection on the wall of the channel and confined within the channel and a projection provided by the other arm and extendinginto the channel.

2.'A casement adjuster comprising telescopically associated enclosing and enclosed arms, the free end of each'arm having a pivotal attaching means, and a stopping means with which the adjuster is provided to limit the relative extending movement of the arms, said stopping means comprising a longitudinally extendingchannel with which one of the arms is provided, a projection on the wall of the channel and confined within the channel and a projectionprovided by the other arm and extending into the channel.

' ERNEST E. WEIDNER. 

